CN202627959U - Double-stroke single-cylinder multi-stage hydraulic pressurizing device - Google Patents
Double-stroke single-cylinder multi-stage hydraulic pressurizing device Download PDFInfo
- Publication number
- CN202627959U CN202627959U CN 201220207216 CN201220207216U CN202627959U CN 202627959 U CN202627959 U CN 202627959U CN 201220207216 CN201220207216 CN 201220207216 CN 201220207216 U CN201220207216 U CN 201220207216U CN 202627959 U CN202627959 U CN 202627959U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- spline
- spline tube
- piston
- pressurizing device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000013016 damping Methods 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 28
- 238000005553 drilling Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000000712 assembly Effects 0.000 abstract 2
- 238000000429 assembly Methods 0.000 abstract 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000010008 shearing Methods 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Abstract
The utility model relates to a large-displacement well and horizontal well drilling matching tool, in particular to a double-stroke single-cylinder multi-stage hydraulic pressurizing device. An upper joint, a hydraulic cylinder and a spline tube of the device are sequentially connected through screw threads from top to bottom, the lower end of the spline is connected with a spline of a lower joint, a sealing sleeve is sheathed on the lower joint and is fixedly arranged on the spline tube through a shearing pin, a plurality of piston rods are arranged in the hydraulic cylinder, piston assemblies are sheathed on the piston rods, the piston assemblies fixedly arranged on the piston rods are fixedly arranged on the hydraulic cylinder through fixing pins, damping holes are arranged on the hydraulic cylinder, and an oil plug is arranged on the spline tube. The double-stroke single-cylinder multi-stage hydraulic pressurizing device has the advantages that the long service life is realized, the drilling pressure can be flexibly changed, and the shock absorption effect is realized. The defects that the service life of the existing hydraulic pressurizing device is short, the drilling pressure cannot be flexibly controlled, and the piston rods can easily absorb the drill bit vibration are overcome.
Description
Technical field:
The utility model relates to a kind of extended reach well, horizontal well drilling kit, particularly a kind of two-pass single-cylinder multistage fluid power pressurizer.
Background technology:
In extended reach well, horizontal well drilling process, generally utilize the gravity promotion drill bit of drill string to creep into, occur the pressurization difficulty easily, and cause the down-hole equipment accident.Adopt the fluid power pressurizer can well solve the pressurization difficult problem, realize the purpose of steadily creeping into.At present, the fluid power pressurizer adopts segmented and two kinds of structures of single cylinder one-stroke.Segmentation structure exists Yi Song, yielding defective, and tool life is short, and becomes the consumable accessory in the BHA, because the piston gross area is little, the actual rock breaking efficiency that produces in creeping into is undesirable simultaneously.Single cylinder one-stroke structure can not be controlled the pressure of the drill size that is applied flexibly, and the while absorbs the drill bit vibrations by piston rod, makes the parts in the whole cylinder body all bear certain risk, and the cylinder interior part is in case damage is prone to seal failure.
The utility model content:
The technical problem that the utility model will solve provides a kind of two-pass single-cylinder multistage fluid power pressurizer, and this device has been realized long service life, can change the pressure of the drill flexibly, has cushioning effect.It is short application life to have overcome existing fluid power pressurizer, can not control the pressure of the drill flexibly, and piston rod is prone to absorb the deficiency of drill bit vibrations.
The technical scheme that the utility model is taked is: a kind of two-pass single-cylinder multistage fluid power pressurizer comprises top connection, fluid cylinder, spline tube and lower contact; Top connection, fluid cylinder, spline tube are threaded from top to bottom in order; The spline tube lower end is connected with the lower contact spline, and sealing shroud is sleeved in the lower contact and through shear pin and is fixed on the spline tube, and a plurality of piston rods are installed in the fluid cylinder; Upper cover of piston rod is equipped with piston component; Fixed piston assembly on the piston rod is fixed on the fluid cylinder through fixing pin, has damping hole on the fluid cylinder, and it is stifled that oil is installed on the spline tube.
Between top connection and the fluid cylinder sealing ring is installed.
The beneficial effect of the utility model is: the utility model has been owing to adopted the synergistic mode of a plurality of piston rods, thereby can change the pressure of the drill flexibly, and long service life has cushioning effect.
Description of drawings:
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.
Accompanying drawing is the structural representation of the utility model.
The specific embodiment:
Shown in accompanying drawing, a kind of two-pass single-cylinder multistage fluid power pressurizer comprises top connection 1, fluid cylinder 7, spline tube 10 and lower contact 12; Top connection 1, fluid cylinder 7, spline tube 10 are threaded from top to bottom in order; Spline tube 10 lower ends are connected with lower contact 12 splines, and sealing shroud 8 is sleeved in the lower contact 12 and through shear pin 9 and is fixed on the spline tube 10, and a plurality of piston rods 6 are installed in the fluid cylinder 7; Be set with piston component 3 on the piston rod 6; Fixed piston assembly on the piston rod 6 is fixed on the fluid cylinder 7 through fixing pin 4, has damping hole 5 on the fluid cylinder 7, and oil stifled 11 is installed on the spline tube 10.Between top connection 1 and the fluid cylinder 7 sealing ring 2 is installed.
It is understandable that; More than about the specific descriptions of the utility model; Only be used to the utility model is described and be not to be subject to the described technical scheme of the utility model embodiment; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model, to reach identical technique effect; As long as satisfy the use needs, all within the protection domain of the utility model.
Claims (2)
1. a two-pass single-cylinder multistage fluid power pressurizer comprises top connection (1), fluid cylinder (7), spline tube (10) and lower contact (12); It is characterized in that: top connection (1), fluid cylinder (7), spline tube (10) are threaded from top to bottom in order; Spline tube (10) lower end is connected with lower contact (12) spline; Sealing shroud (8) is sleeved on lower contact (12) and goes up and be fixed on the spline tube (10) through shear pin (9); A plurality of piston rods (6) are installed in the fluid cylinder (7), are set with piston component (3) on the piston rod (6), the fixed piston assembly on the piston rod (6) is fixed on the fluid cylinder (7) through fixing pin (4); Have damping hole (5) on the fluid cylinder (7), oil stifled (11) is installed on the spline tube (10).
2. according to the described two-pass single-cylinder multistage of claim 1 fluid power pressurizer, it is characterized in that: between said top connection (1) and the fluid cylinder (7) sealing ring (2) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220207216 CN202627959U (en) | 2012-05-09 | 2012-05-09 | Double-stroke single-cylinder multi-stage hydraulic pressurizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220207216 CN202627959U (en) | 2012-05-09 | 2012-05-09 | Double-stroke single-cylinder multi-stage hydraulic pressurizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202627959U true CN202627959U (en) | 2012-12-26 |
Family
ID=47381167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220207216 Expired - Fee Related CN202627959U (en) | 2012-05-09 | 2012-05-09 | Double-stroke single-cylinder multi-stage hydraulic pressurizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202627959U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533316A (en) * | 2014-12-15 | 2015-04-22 | 中国石油天然气集团公司 | Underground stepping type bit pressure loading device and control method thereof |
-
2012
- 2012-05-09 CN CN 201220207216 patent/CN202627959U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533316A (en) * | 2014-12-15 | 2015-04-22 | 中国石油天然气集团公司 | Underground stepping type bit pressure loading device and control method thereof |
| CN104533316B (en) * | 2014-12-15 | 2016-08-24 | 中国石油天然气集团公司 | A kind of down-hole step-by-step movement the pressure of the drill loader and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20150509 |
|
| EXPY | Termination of patent right or utility model |